Type-writer.



F. S. ROSE, DEOD.

6.1". nosn, ADMINISTRATOR.

TYPE WRITER.

APPLIOATION FILED JAN. 25, 1905.

Patented June 24, 1913.

2 SHEETS-SHEET 1.

A INVVENTOR ATTOHIVEVJ F. S. ROSE, DBG'D.

a. r. ROSE, ADMINISTRATOR.

TYPE WRITER.

APPLIUATIOR FILED JAILZF), 1905.

Patented June 24, 191.5.

INVENTOR y; M i 72% 42. 41. MW

WITNESSES:

UNITED STATES PATENT OFFICE.

FRANK S. ROSE. OF NEWARK, NEW JERSEY; GEORGE F. ROSE, ADMINISTRATOR OF SAID FRANK S. ROSE, DECEASED, ASSIGNOR TO STANDARD TYPEWRITEB COM- PANY, A CORPORATION OF NEW YORK.

TYPE-WRITER.

Original application filed February 11, 1908, Serial No. 142,828.

Specification of Letters Patent.

25, 1905. Serial No. 242,629.

To all 'Ie/wm it may waver);

lie it known that I, FRANK S. Rose, a citizen of the United States, residing in the city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Typell'riters, of which the following is a specification.

The present invention relates more particularly to typcwriters such as disclosed in my Patent No. 754,243, dated March 8, 1904.

One improvement consists in such an organizationof p'arts comprising a typobar, a. ke 'le\'er, and an intermediate link that at. all points in the arcuate or swinging movement of the kcy-ltwer or the type-bar, said intermediate link maintains a proper vertical position. The advantage of this is, on the depression of the key-lever, the link exerts an upward thruston the typebar at all points of its travel, there being no dead center. According to this part of my invention each key-lever is so arranged with relation to the fulcrum of the type-bar. with which said key-lever is associate. that on the depression of the keylever at. one end, the other end is caused to continually approach toward the fulcrum of the type-liar. As the link remains normally in a vertical position, it, follows that the type-har is-actuat.ed on the upward thrust of the link in a constant manner, thus overcoming any possible tendency of the parts to reach a dead center. It.- follows, also, that as the link is pivoted directly to the typeliar and also to the key-lever, and

as the length of the link remains constant, the movement of the type-bar is quicker or faster than the motionof the lever the are of movement of the. lug o being of a radius considerably shorter than the arc of the lever arrnto which the link is pivoted, in consequence of which the type-bar'has'an accelerated movementascompared with the key-lever by which the type bar is actuated.

Another part of the invention is a novel construction of the sector which forms a part of the machine frame, said sector consisting of individual brackets for the separate type-bars, and each bracket being secured removably to a part of the frame by a readily accessible fastening, the whole be ters from the other group or groups.

ing so arranged that any typebar can be detached by simply removing it with the bracket. I

Another part of the invention consists in an arrangement of the key-levers in groups, a tension device for all the-groups of keylevcrs, and means for regulating' said devices so as to vary the tension exerted thereby on the key-levers of the groups.

I prefer to arrange the key-levers of one group to swing on a different center or cen- Fun thermore. it. is preferred to have the lovers arranged for the finger keys thereof to lie in two or more hanks, and the axes of the key levers all lie in substantially the same horizontal pla rte,

Reference is to be had to the accompanying drawings, forming a part of this specification, wherein like characters of reference are used to indicate corresponding parts in all the figures' Figure l is a view in side elevation with parts in section illustrating the type-bar in the act of striking a platen. Fig. 2 is a sectional. side view of the parts in the positions they assume when the type-bar is lowcred. Fig. 3 is a front elevation of the back part of the machine frame, illustrating the sector, in which the typebars are pivotally supported. Fig. 4 is an edge view or the back I part of the machine, illustrating the sector.

Fig. 5 is a plan view of the parts shown by Fig. 4. Figs. 6 and 7 are views in side and edge elevation, illustrating one oi the brackets of the sector. Fig. 8 is a side elevation, illustrating means for adjusting a ten sion device for the keydcvc-rs, and Fig. 9 is a detail plan view of a number of key-levers and the supports therefor.

The framework of the machine may be of any preferred construction. Qnc member of this framework is a back plate or wall 5, which is joined to or made in one piece withthe sides ('3, of the frame. This back plate or wall 5 has a recess formedthcrein,

the edge 7 of; which recess is segmental. On the face of the back plate or wall 5 is a sector for the reception of the type-bars A. This sector consists of a ;plurality of brackets 13, shown by Fi s. 1 to 7 inclusive. Each bracketmade 0? a single piece of metal witha longitudinal slit or kerf 7),

reception of an end portion of one typebar. The side walls b of the bracket are provided with coincident openings 0, and the closed back wall 0 of said bracket has a tapped opening 0. A desired number of brackets are assembled in the order shown v by Fig. 3, for the top edges of said brackets to be flush with the segmental edge 7 of the back plate, the closed back wall 6 of said bracket resting firmly against the back plate 5. The brackets are arranged in the form of a sector, and they lie in radial positions for the purpose of making the typebars A strike at a common center. These brackets are fastened individually in place to the back plate or wall, a single screw 8 being used to attach each bracket to the back plate. By reference to Figs. 1 and 2 it will be noted that the screw passes loosely through an opening in the back wall and engages with the threads in the tapped opening 0 of the bracket.

Each type-bar A is provided with a flattened heel a, the edge of which is curved as shown by Figs. 1 and 2. The heel of the type-bar fits snugly between the parallel side walls Z) form lateral supports for said type-bar, and through each bracket and the type-bar fitted therein passes a pivotal pin, stud or screw 9, the latter, serving to pivotally connect. the type-bar to its bracket and to furnish a horizontal axis for the swinging movement of the type-bar. Eachv type-bar is provided at its other end with a'striking head a, provided with the desired number of type faces, andthis strikingh'ead operates against a suitable platen (IQ-forming a part of the typewriter. As disclosed by my prior patent, theiselies of type-bars A, are adapted to rest upon a suitable cushion when said type-bars are lowered to their normal positions. In Fig. 2, one-of the type-bars is shown in a substantially horizontal position, and below-the plane of the platen C, thus exposing said platen and the work in the carriage therefor.

The key-levers D of my improved machine are all arranged in the same horizontal plane. Each key lever is bent at a point intermediate of its length as at (Z, and is provided at one end with an upstanding finger or arm d. having the usual finger piece (1. In order to arrange the finger pieces (2" of the whole series of key levers in different banks so that the individual levers may be operated without hindrance or conof the bracket, which walls fusion, I arrange the key-levers in groups, and pivotally support the key-levers of the differentgroups on horizontal axes which are disposed in different vertical planes, although the axes forsaid different groups of keylcvcrs all lie in the same horizontal plane, substantially as shown by Figs. 8 and 9 of the drawings. In said figures, D, I), l), designate key-levers belonging to three different groups, said groups of key levers being parallel one to the other and having their finger pieces d in different vertical planes, so as to arrange them in banks, as heretofore described.

Extending horizontally across the frame are arbors or rods E, E, E said arbors being supported by the side portions of the machine frame in any suitable way. The arbors are arranged alongside of each other, in the same horizontal plane, and these arbors provide the pivotal supports for the different groups of key-levers I), D, D

I prefer to suspend each key-lever from one of the plurality of arbors, and in the embodinn-nt shown, each key-lever is pro-' vided near its angle or bend with an up standing plate 10, which has a horizontal sleeve 11. The sleeve lies above the keylever, transversely across the same, and said sleeve is fitted loosely on one of the arbors, so as to turn freely thereon when the keylever. is rocked or oscillated. The keylevers of the diiferent groups extend toward the back plate 5, so as to terminate substantially below the sector which affords the pivotal support for the type-bars, and said inner ends of the key-levers are connected wit-h the type-bars individually. This individual connection is secured by the employment of links F, which are so arranged relative tothe key-levers and the type-bars as to maintain themselves in vertical positions at all times and at all points in the swinging movement of the levers and bars. The lower end of each link is pivoted to one key-lever at the inner extremity thereof, While the upperend of each link is pivoted to a type-bar at a point between the striking head and the pivoted end port-ion thereof. I prefer to provide each type-bar with an offset portion a located quite. close to the pivot 9, and the upper end of one of the links is connected loosely to this offset portion (1 Itwill be seen that on the depression of the key end of one lever, the latter turns on the pivot afforded by one of the arbors and the inner 'end portion of said key-lever swings in an upward and forward direction, This upward movement. of the key-lever is con'nnunicated directly to the link, which as heretofore described, maintains a vertical tivcly, so as to cause its head to strike the platen with the required force.

Special imp rtz'u'ice 18 attached to the organizatio-n orroinh'ination of. parts. wherein the link between each kev-levt-r and ty ehar maintains a vertical position at all points in thenwingiug mo ement of the keylever and the; type-liar, \'\herel v said link is adapted to exert a pushing artion on the type-liar when flicker-lever is depressed.

' iy reference to Figs. 1 and 2 of the draw ings, it will he noted that the kevlever' l) so related to a t vpehar that the end of said lever to which the link I" is pivoted caused, on the depression of the other end of Said lever, to approach in a continuons manner toward the fulcrum y of the type-liar, or in other wot-die, the end of the keylever moves nearer and nearer toward the pivot. g, as will he seen by eoniparin Figs 2 with Fig. 1. The link I is pivoted in a permanent or nnchaogeal'ile manner directly to the type-liar and thc logy-lever, so thatthe length of the link 'remains constant. Fnrthernmre, the link F is pivoted to the type-bar at such a point. thaton the upward i'novementvof. the tvpe-har and the key-lever the link will rise above the. fulcrum l/ of the type-bar, see Fig 2, in consequence of this. novel relation of the key-lever, the. t \'|)tl)ill and the link, the. parts are not only precluded from reaching a dead center point which would make them even momentarily inactive but the upward travel of the type bar with relation to the movement of tho keydevcr is accelerated in order to secure quick action of the. mechanism.

Another partof my invention consists in the employment of ,a tension device which is adapted to varptlie tension of all the springs employed for holding the key-levers in their normal posit-ions. Each key-lever is under the control of a spring G, the same heinl preferably a. coiled spring arranged heow said lever and occupying an The upper end of each spring is connected or hitched to one keyleve-r at a mint close to the bend (Z thereof, While the lower end of said spring is connected to one of apluralitzy of rods ll. The springs G are arranged in groups, the 8 rings of one group being connected with t e key-levers of one group, and the different. groups of springs are arranged one in rear 0 the other, as indicated by l ig. 8. The rods II lie'in the same horizontal plane at the lower part of the machine frame, and these rods are fastened to horizontal slides I, the. latter being arranged at the sides of the frame and supported thereon in a suitable way for horizontal adjustment. The slides I carry or support the plurality of horizontal rods H, and these Slides are adapted to be adjusted for the purpose of varying the strength of the springs G.

Ear-h sli lel.-nia v lac adjusted by any suitable meanifhnt' as shown, i prefer to'enr ploy a threadwl rod], adapted to extend through the trout rail of the nun-lune and to receive an adiuulingj nut i, the latter being arrang d to hear against said front rail and to he exposed for convenient access liy the o erator. it is evident that the tension of the spri'ngy G tend to draw the slides l: in one direction and to maintain the key-levers in such positions that the lin er pieces thereof will he raiied. The rods '1 and the thumb nuts i eonnterm-t the pull of the springs and enable the Slltltf-t to be adjusted, no as to iiicrease or relax the tension oi said springs.

(.liangex in the form, size, proportion, and minor details in conatrnetion may he made without departing from the spirit of the invention or moi-Hiring: any oi the advantages thereof, and l, tln'lttoi't', lCsQl'VB the right to make Hlltil alterations and modifications as fairly fall within the scope of my invention as delined h the annexed clainisf.

liy reference to Figs. l and 8 oi the drawing'x itwill he noun that each'Spi-ing, (it, is

comm-ted to our key at a. point'ln the rear of the vertical plane of the rod from which the ey lever is underhu'ng. This construe tion ix :nlvantageous for the reason that the upward movement of the rear part of the key lever due to the depressionot the front part thereof rauaes'a slight expannion, only, of the spring. This enables me to employ stronger springs, and such stronger springs wear or last longerjhan springs which would other-wire be. employed.

In my machine. each key lever is bent at a point intermediate its ends so as-to produce a rea' arm which is at a slight. angle. to the trout arm of said lever. This en ahh'a the t'nlcra of the key levers to be positioned a considerable distance above the base line of the machine, and about in the. horizontal plane of the. pivotal connection of the type. lJnlH with the sector. Said rela tive location and organization of the parts Itl'OVlt'ltH ample space between the fulcra of the key levers and the base line of the machine for the accommodation of the key lever springs and of certain other parts employed in the machine. In addition thereto, the lllllt.l inclined arms of the key levers are brought into such ponitions below the. pivoted type bars that; links, 1 will; remain, practically at. all times, in vertical positions, when the type bars are lowered and particularly during the upward thrust of the links in theoperation of actuating the type bars, such vertical positions of the links being very desirable in connection with certain shorter links at. the respective ends of the sector, .or in other words, at the respective sides of the machine. As is usual, the key lovers are arranged in banks orgroups, preferably three in number, see Fig. 8,

Said key levers of the different banks vary in length, but in my machine the keys comprised in each group are underhung from a common rod, to accomplish which 1. cmploy as many fulcrum rods, E, E, E as there are-groups or banks. Said fulcrum rods are positioned in the same horizontal plane, see Fig. 8, and each key lever is undcrhung from one rod, and at a point intermediate its ends, the entire arrangement being such that the key levers of all the groups or hanks may be depressed for equal and uniform distances to properly actuate the type bars, that is to say, thekey lever of one group does not require to be depressed a greater distance than any other key lever of the same grouper either of the other groups.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:----

1. In a front-strike typc\\-'riter, the combination with pivotal type-bars normally lying in a sul'istantially horizontal position,

of a plurality of transversely extending supports, kc \;'-levers nnderhung in groups'from said supports and having their body portions also extending in substantially a horizontal plane under the type-bars. vertically arranged links connecting the inner ends of the key-levers directly to the type-bars at a point adjacent to the pivots of said typebars, and separate springs for said keylevers, said springs being held at one end at a point below and in front of the fulcrum of said key-levers and each spring being connected at its other end to its correspouding; key-.le'ver at a point close to and in the rear of the fulcrum of said.ke '-lever.

2. ln a front strike typewriter, pivoted type bars, underhuug key levers each bent at a point intermediate its ends and pro vided with a rear arm which lies at; an obtuse angle to the remainder of the key lever, the rearward extremity of said inclined arm of each key lever being below the pivot of one type bar, a link connecting the extremity of said inclined arm with one type bar, and

a spring connected to each key lever at a point adjacent to the bent part thereof:

3. In a front-strike typewriter, the com-- bination of pivotally held type-bars, a plurality of fulcrum rods positioned parallel to each other and all lying in the same horizontal plane, groups or banks of key-levers,

pivot of said bars, and separate springs'each connected to one of said key-levers.

4. In a tvpmvrtter, a plurallty of fulcrum bars, groups of key levers, the key levers of each 'roup being underhung from one of said ulcrum'bars, springs connected separately with the key levers, slidable tension means to which substantially all the springs are attaclmd, and hand operated means for adjusting said tension means.

5. in a t pe.\vriter, key-levers, movable members, cross members carried by said movable members, and springs connected to said members aml attached individually to the key levers. I v

(3, in a typewriter, groups of key-levers, rods movable below said key-levers, groups of springs connected to said rods and said springs connected individually to the keylevers. and means for adjusting the rods.

7. In a typewriter, key'levers, slides below said levers, cross rodsocarried by' the Slides, springs connected to the key levers and the cross rods, threaded rods connected to the slides, aml nuts for adjusting the rods.

in testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK S. ROS 1*). Vi t ncsscsl ll. 1. lbnixiuuu, V. E, NICHOLS. 

